mirror_zfs/include
Alexander Motin 04d4df89f4 Avoid extra taskq_dispatch() calls by DMU
DMU sync code calls taskq_dispatch() for each sublist of os_dirty_dnodes
and os_synced_dnodes.  Since the number of sublists by default is equal
to number of CPUs, it will dispatch equal, potentially large, number of
tasks, waking up many CPUs to handle them, even if only one or few of
sublists actually have any work to do.

This change adds check for empty sublists to avoid this.

Reviewed by: Sean Eric Fagan <sef@ixsystems.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:  Alexander Motin <mav@FreeBSD.org>
Closes #8909
2019-09-25 11:27:48 -07:00
..
linux Fix zfs set atime|relatime=off|on behavior on inherited datasets 2019-05-07 10:06:30 -07:00
spl Remove vn_set_fs_pwd()/vn_set_pwd() (no need to be at / during insmod) 2019-09-25 11:27:46 -07:00
sys Avoid extra taskq_dispatch() calls by DMU 2019-09-25 11:27:48 -07:00
.gitignore Create /proc/sys/kernel/spl/gitrev with git hash 2018-10-08 21:57:02 -07:00
libnvpair.h Add JSON output support to channel programs 2018-03-19 12:40:58 -07:00
libuutil_common.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil.h Correct cppcheck errors 2017-09-19 12:17:29 -07:00
libzfs_core.h Add TRIM support 2019-03-29 09:13:20 -07:00
libzfs_impl.h OpenZFS 8115 - parallel zfs mount 2018-11-15 11:33:58 -08:00
libzfs.h Add feature check for 'zpool resilver' command 2019-05-02 16:42:31 -07:00
libzutil.h Fix libudev dependency in libzutil 2018-11-06 17:47:52 -08:00
Makefile.am Add libzutil for libzfs or libzpool consumers 2018-11-05 11:22:33 -08:00
thread_pool.h Add libtpool (thread pools) 2017-08-09 15:31:08 -07:00
zfeature_common.h Add bookmark v2 on-disk feature 2019-03-13 10:58:39 -07:00
zfs_comutil.h OpenZFS 9337 - zfs get all is slow due to uncached metadata 2018-07-12 10:49:27 -07:00
zfs_deleg.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
zfs_fletcher.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zfs_namecheck.h Restrict filesystem creation if name referred either '.' or '..' 2019-09-25 11:27:47 -07:00
zfs_prop.h Add zfs module feature and property info to sysfs 2018-09-02 12:09:53 -07:00